EP0311007A3 - Programmable controller with multiple task processors - Google Patents

Programmable controller with multiple task processors Download PDF

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Publication number
EP0311007A3
EP0311007A3 EP88116390A EP88116390A EP0311007A3 EP 0311007 A3 EP0311007 A3 EP 0311007A3 EP 88116390 A EP88116390 A EP 88116390A EP 88116390 A EP88116390 A EP 88116390A EP 0311007 A3 EP0311007 A3 EP 0311007A3
Authority
EP
European Patent Office
Prior art keywords
programmable controller
multiple task
task processors
processors
programmable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88116390A
Other versions
EP0311007B1 (en
EP0311007A2 (en
Inventor
Mark A. Flood
Michael D. Kalan
Peter N. Preis
Alden L. Peterson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Allen Bradley Co LLC
Original Assignee
Allen Bradley Co LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Allen Bradley Co LLC filed Critical Allen Bradley Co LLC
Publication of EP0311007A2 publication Critical patent/EP0311007A2/en
Publication of EP0311007A3 publication Critical patent/EP0311007A3/en
Application granted granted Critical
Publication of EP0311007B1 publication Critical patent/EP0311007B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • G05B19/052—Linking several PLC's
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/10—Plc systems
    • G05B2219/15—Plc structure of the system
    • G05B2219/15081—Period length ratio between application and communication task is settable
EP88116390A 1987-10-07 1988-10-04 Programmable controller with multiple task processors Expired - Lifetime EP0311007B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US105815 1987-10-07
US07/105,815 US4937777A (en) 1987-10-07 1987-10-07 Programmable controller with multiple task processors

Publications (3)

Publication Number Publication Date
EP0311007A2 EP0311007A2 (en) 1989-04-12
EP0311007A3 true EP0311007A3 (en) 1989-08-02
EP0311007B1 EP0311007B1 (en) 1994-03-09

Family

ID=22307929

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88116390A Expired - Lifetime EP0311007B1 (en) 1987-10-07 1988-10-04 Programmable controller with multiple task processors

Country Status (4)

Country Link
US (1) US4937777A (en)
EP (1) EP0311007B1 (en)
JP (1) JPH0283601A (en)
CA (1) CA1310387C (en)

Families Citing this family (124)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5193189A (en) * 1987-10-07 1993-03-09 Allen-Bradley Company, Inc. Programmable controller with multiple priority level task processing
US5001666A (en) * 1987-10-19 1991-03-19 Motorola, Inc. Multiple interrupt tri-level microprocessor operating system
JP2561696B2 (en) * 1988-03-31 1996-12-11 三菱電機株式会社 Shared area management method in network system
JPH0210454A (en) * 1988-06-29 1990-01-16 Canon Inc Electronic apparatus
US5138701A (en) * 1988-07-12 1992-08-11 Minolta Camera Kabushiki Kaisha Data communication control system
US5065314A (en) * 1988-09-23 1991-11-12 Allen-Bradley Company, Inc. Method and circuit for automatically communicating in two modes through a backplane
IT1227711B (en) * 1988-11-18 1991-05-06 Caluso Torino MULTIPROCESSOR SYSTEM FOR DATA PROCESSING TO SHARED DISTRIBUTED RESOURCES AND STALL PREVENTION.
US5136717A (en) * 1988-11-23 1992-08-04 Flavors Technology Inc. Realtime systolic, multiple-instruction, single-data parallel computer system
US5042002A (en) * 1989-03-31 1991-08-20 Allen-Bradley Company, Inc. Programmable controller with a directed sequencer
US5319783A (en) * 1989-03-31 1994-06-07 Allen-Bradley Company Inc. Programmable controller with an operator messaging function
GB2232514B (en) * 1989-04-24 1993-09-01 Yokogawa Electric Corp Programmable controller
US5218711A (en) * 1989-05-15 1993-06-08 Mitsubishi Denki Kabushiki Kaisha Microprocessor having program counter registers for its coprocessors
JP3069357B2 (en) * 1989-07-13 2000-07-24 キヤノン株式会社 Printing control device
US5099449A (en) * 1989-07-17 1992-03-24 Allen-Bradley Company, Inc. Industrial controller with variable I/O update rate
US5166872A (en) * 1989-07-17 1992-11-24 Ability Technologies Corporation System and method for controlling devices through communication processors and pluralities of address-associated device controllers sharing each communication processor
WO1991001520A1 (en) * 1989-07-17 1991-02-07 Ability Technologies Corporation System and method for controlling devices
US5283869A (en) * 1989-07-25 1994-02-01 Allen-Bradley Company, Inc. Interrupt structure for network interface circuit
US5218699A (en) * 1989-08-24 1993-06-08 International Business Machines Corporation Remote procedure calls in heterogeneous systems
US5187777A (en) * 1989-09-21 1993-02-16 Loral Aerospace Corp. Multi-function pre-processor for target tracking
US5218686A (en) * 1989-11-03 1993-06-08 Compaq Computer Corporation Combined synchronous and asynchronous memory controller
US5072374A (en) * 1989-11-07 1991-12-10 Ge Fanuc Automation North America, Inc. Method for communicating among a plurality of programmable logic controllers each having a dma controller
JP2839590B2 (en) * 1989-11-10 1998-12-16 株式会社東芝 Instruction assignment device and instruction assignment method
JP2526691B2 (en) * 1990-03-02 1996-08-21 三菱電機株式会社 Programmable controller control method
JP2526709B2 (en) * 1990-05-08 1996-08-21 三菱電機株式会社 Programmable controller and method of executing SFC program of programmable controller
US5265005A (en) * 1990-08-31 1993-11-23 Allen-Bradley Company, Inc. Processor for a programmable controller
CA2048944A1 (en) * 1990-08-31 1992-03-01 Otomar S. Schmidt Processor for a programmable controller
DE69124066T2 (en) * 1990-10-31 1997-08-21 Mitsubishi Electric Corp Process control device
WO1992017840A1 (en) * 1991-03-28 1992-10-15 Cray Research, Inc. Real-time i/o operation in a vector processing computer system
US5297257A (en) * 1991-04-15 1994-03-22 Allen-Bradley Company, Inc. Distributing a real-time control program to a plurality of input/output nodes
US5432911A (en) * 1991-07-15 1995-07-11 Matsushita Electric Works, Ltd. Controllers request access within one bus cycle causing hardware-wait to stall second controller when first controller is accessing and second controller is still requesting access
AU2052192A (en) * 1991-08-07 1993-02-11 Aeci Limited A controller
FR2682202B1 (en) * 1991-10-03 1994-03-11 Sextant Avionique METHOD AND DEVICE FOR REAL-TIME MANAGEMENT OF A SYSTEM COMPRISING AT LEAST ONE PROCESSOR CAPABLE OF MANAGING MULTIPLE FUNCTIONS.
US5265004A (en) * 1991-10-15 1993-11-23 Allen-Bradley Company, Inc. Sequence controller with combinatorial Boolean logic
JPH05324589A (en) * 1992-03-25 1993-12-07 Nippon Sheet Glass Co Ltd Parallel computer device and optical coupling device
US5390356A (en) * 1992-05-05 1995-02-14 The United States Of America As Represented By The Secretary Of The Navy Rapid reprogramming terminal
US5455923A (en) * 1992-07-30 1995-10-03 Kaplinsky; Cecil H. Memory system for loading peripherals on power up
JP3310402B2 (en) * 1993-06-24 2002-08-05 株式会社三協精機製作所 Multitask controller
GB2297180B (en) * 1993-09-27 1998-05-20 Oracle Corp Method and apparatus for parallel processing in a database system
US5513346A (en) * 1993-10-21 1996-04-30 Intel Corporation Error condition detector for handling interrupt in integrated circuits having multiple processors
US5508909A (en) * 1994-04-26 1996-04-16 Patriot Sensors And Controls Method and systems for use with an industrial controller
US5887029A (en) * 1994-05-31 1999-03-23 Allen-Bradley Company, Llc Method of scheduling spatially separated control events with an industrial controller
WO1996036925A1 (en) * 1995-05-16 1996-11-21 Giga Operations Corporation Monitor cpu for a logic device
US5881247A (en) * 1995-11-30 1999-03-09 Allen-Bradley Company Llc System having a plurality of frame bytes capable of identifying addressed recipients and assert a busy signal onto the backplane bus to forthrightly abort the message transfer
US5768632A (en) * 1996-03-22 1998-06-16 Allen-Bradley Company, Inc. Method for operating inductrial control with control program and I/O map by transmitting function key to particular module for comparison with function code before operating
US6311265B1 (en) * 1996-03-25 2001-10-30 Torrent Systems, Inc. Apparatuses and methods for programming parallel computers
US5805442A (en) * 1996-05-30 1998-09-08 Control Technology Corporation Distributed interface architecture for programmable industrial control systems
US7146408B1 (en) 1996-05-30 2006-12-05 Schneider Automation Inc. Method and system for monitoring a controller and displaying data from the controller in a format provided by the controller
EP0853788A1 (en) * 1996-08-08 1998-07-22 Agranat Systems, Inc. Embedded web server
US6456308B1 (en) 1996-08-08 2002-09-24 Agranat Systems, Inc. Embedded web server
AU724661B2 (en) * 1996-08-29 2000-09-28 Bausch & Lomb Surgical, Inc. Dual loop frequency and power control
US5796603A (en) * 1996-10-17 1998-08-18 Allen Bradley Company, Inc. Partitioning program for highly distributed control system to reduce network traffic
DE19707107A1 (en) * 1997-02-22 1998-09-10 Bosch Gmbh Robert Device for programming a PLC
US6330008B1 (en) * 1997-02-24 2001-12-11 Torrent Systems, Inc. Apparatuses and methods for monitoring performance of parallel computing
US6732191B1 (en) 1997-09-10 2004-05-04 Schneider Automation Inc. Web interface to an input/output device
US7035898B1 (en) 1997-09-10 2006-04-25 Schneider Automation Inc. System for programming a factory automation device using a web browser
US7058693B1 (en) 1997-09-10 2006-06-06 Schneider Automation Inc. System for programming a programmable logic controller using a web browser
US6587884B1 (en) 1997-09-10 2003-07-01 Schneider Automation, Inc. Dual ethernet protocol stack for maximum speed access to a programmable logic controller (PLC)
US20020152289A1 (en) * 1997-09-10 2002-10-17 Schneider Automation Inc. System and method for accessing devices in a factory automation network
US20020091784A1 (en) * 1997-09-10 2002-07-11 Baker Richard A. Web interface to a device and an electrical network control system
US6151625A (en) * 1997-09-10 2000-11-21 Schneider Automation Inc. Internet web interface including programmable logic controller for controlling output devices based on status of input devices
US6282454B1 (en) 1997-09-10 2001-08-28 Schneider Automation Inc. Web interface to a programmable controller
US6014513A (en) * 1997-12-23 2000-01-11 University Of Washington Discovering code and data in a binary executable program
US7162510B2 (en) * 1998-03-16 2007-01-09 Schneider Automation Inc. Communication system for a control system over Ethernet and IP networks
WO2000016200A1 (en) * 1998-09-10 2000-03-23 Sanctum Ltd. Method and system for maintaining restricted operating environments for application programs or operating systems
US6434157B1 (en) 1998-10-06 2002-08-13 Schneider Automation, Inc. MODBUS plus ethernet bridge
US6233626B1 (en) 1998-10-06 2001-05-15 Schneider Automation Inc. System for a modular terminal input/output interface for communicating messaging application layer over encoded ethernet to transport layer
US6845401B1 (en) 1998-12-30 2005-01-18 Schneider Automation Inc. Embedded file system for a programmable logic controller
US6853867B1 (en) 1998-12-30 2005-02-08 Schneider Automation Inc. Interface to a programmable logic controller
US6327511B1 (en) 1998-12-30 2001-12-04 Schneider Automation, Inc. Input/output (I/O) scanner for a control system with peer determination
DE19983975B3 (en) * 1999-08-30 2006-05-18 Mitsubishi Denki K.K. Programmable control system and reset control method for the programmable control system
US7734744B1 (en) * 1999-11-09 2010-06-08 Cisco Technology, Inc. System for communicating management information and method of operation
US6662254B1 (en) 2000-06-22 2003-12-09 Axerra Networks, Ltd. System architecture
US7181487B1 (en) 2000-07-07 2007-02-20 Schneider Automation Inc. Method and system for transmitting and activating an application requesting human intervention in an automation network
US7032029B1 (en) 2000-07-07 2006-04-18 Schneider Automation Inc. Method and apparatus for an active standby control system on a network
US7519737B2 (en) * 2000-07-07 2009-04-14 Schneider Automation Inc. Input/output (I/O) scanner for a control system with peer determination
US7028204B2 (en) * 2000-09-06 2006-04-11 Schneider Automation Inc. Method and apparatus for ethernet prioritized device clock synchronization
US20020167967A1 (en) * 2000-09-06 2002-11-14 Schneider Electric Method for managing bandwidth on an ethernet network
US7023795B1 (en) * 2000-11-07 2006-04-04 Schneider Automation Inc. Method and apparatus for an active standby control system on a network
WO2002088966A1 (en) * 2001-04-26 2002-11-07 The Boeing Company Systems, methods, and bus controllers for creating an event trigger on a network bus
US7007106B1 (en) 2001-05-22 2006-02-28 Rockwell Automation Technologies, Inc. Protocol and method for multi-chassis configurable time synchronization
US8171414B2 (en) * 2001-05-22 2012-05-01 Netapp, Inc. System and method for consolidated reporting of characteristics for a group of file systems
US6914914B1 (en) 2001-05-22 2005-07-05 Rockwell Automation Technologies, Inc. System and method for multi-chassis configurable time synchronization
US7818457B1 (en) 2001-05-22 2010-10-19 Rockwell Automation Technologies, Inc. Apparatus for multi-chassis configurable time synchronization
DE10163342A1 (en) * 2001-12-21 2003-07-10 Elektro Beckhoff Gmbh Unterneh Data transmission method, serial bus system and connection unit for a passive bus device
US10173008B2 (en) 2002-01-29 2019-01-08 Baxter International Inc. System and method for communicating with a dialysis machine through a network
US8775196B2 (en) 2002-01-29 2014-07-08 Baxter International Inc. System and method for notification and escalation of medical data
DE10216332A1 (en) * 2002-04-13 2003-10-30 Conducta Endress & Hauser Measuring device for process technology and operating procedures for a measuring device
US8234128B2 (en) 2002-04-30 2012-07-31 Baxter International, Inc. System and method for verifying medical device operational parameters
US6640163B1 (en) * 2002-09-30 2003-10-28 Husco International, Inc. Operating system for a programmable controller of a hydraulic system
US20040210664A1 (en) * 2003-04-17 2004-10-21 Schneider Automation Inc. System and method for transmitting data
US7225037B2 (en) * 2003-09-03 2007-05-29 Unitronics (1989) (R″G) Ltd. System and method for implementing logic control in programmable controllers in distributed control systems
US7424328B2 (en) * 2006-01-03 2008-09-09 De Silvio Louis F Apparatus and method for wireless process control
JP4766252B2 (en) 2006-04-28 2011-09-07 オムロン株式会社 Programmable controller and communication unit
DE102006035662A1 (en) * 2006-07-31 2008-02-14 Infineon Technologies Ag Monitoring correct operation of data processing unit, displaces subsystem from allowed state into non-allowed state before executing partial operational run
US7979701B1 (en) 2006-09-15 2011-07-12 Netapp, Inc. Cross mapping graphical interface to show encryption relationships between hosts and storage devices
US7822802B2 (en) * 2006-09-29 2010-10-26 Fisher-Rosemount Systems, Inc. Apparatus and method for merging wireless data into an established process control system
EP2078994A1 (en) * 2008-01-10 2009-07-15 Siemens Aktiengesellschaft Automation device and method for its operation
US10089443B2 (en) 2012-05-15 2018-10-02 Baxter International Inc. Home medical device systems and methods for therapy prescription and tracking, servicing and inventory
US8057679B2 (en) 2008-07-09 2011-11-15 Baxter International Inc. Dialysis system having trending and alert generation
JP5473267B2 (en) * 2008-07-14 2014-04-16 キヤノン株式会社 Workflow execution system and workflow execution method
US8554579B2 (en) 2008-10-13 2013-10-08 Fht, Inc. Management, reporting and benchmarking of medication preparation
WO2011044398A2 (en) * 2009-10-07 2011-04-14 Qsigma, Inc. Computer for amdahl-compliant algorithms like matrix inversion
US8340793B2 (en) * 2009-10-09 2012-12-25 Hamilton Sundstrand Corporation Architecture using integrated backup control and protection hardware
US8536821B2 (en) 2011-09-22 2013-09-17 Hamilton Sundstrand Corporation Redundant interface for a stepper motor
US9625894B2 (en) 2011-09-22 2017-04-18 Hamilton Sundstrand Corporation Multi-channel control switchover logic
US9483032B2 (en) 2011-09-22 2016-11-01 Hamilton Sundstrand Corporation Multi-channel protection logic
US10552577B2 (en) 2012-08-31 2020-02-04 Baxter Corporation Englewood Medication requisition fulfillment system and method
EP2911641B1 (en) 2012-10-26 2018-10-17 Baxter Corporation Englewood Improved work station for medical dose preparation system
SG11201503190RA (en) 2012-10-26 2015-05-28 Baxter Corp Englewood Improved image acquisition for medical dose preparation system
US9772615B2 (en) 2013-05-06 2017-09-26 Hamilton Sundstrand Corporation Multi-channel control switchover logic
KR101558084B1 (en) * 2014-04-15 2015-10-06 엘에스산전 주식회사 Plc system having a plurality of cpu modules and control method thereof
EP3161778A4 (en) 2014-06-30 2018-03-14 Baxter Corporation Englewood Managed medical information exchange
US11575673B2 (en) 2014-09-30 2023-02-07 Baxter Corporation Englewood Central user management in a distributed healthcare information management system
US11107574B2 (en) 2014-09-30 2021-08-31 Baxter Corporation Englewood Management of medication preparation with formulary management
WO2016090091A1 (en) 2014-12-05 2016-06-09 Baxter Corporation Englewood Dose preparation data analytics
EP3265989A4 (en) 2015-03-03 2018-10-24 Baxter Corporation Englewood Pharmacy workflow management with integrated alerts
CA2985719C (en) 2015-06-25 2024-03-26 Gambro Lundia Ab Medical device system and method having a distributed database
WO2018114346A1 (en) 2016-12-21 2018-06-28 Gambro Lundia Ab Medical device system including information technology infrastructure having secure cluster domain supporting external domain
US11112449B2 (en) * 2018-04-06 2021-09-07 Bendy Nevada, LLC Flexible and scalable monitoring systems for industrial machines
JP7364428B2 (en) * 2019-10-30 2023-10-18 ファナック株式会社 programmable controller
JP7364427B2 (en) * 2019-10-30 2023-10-18 ファナック株式会社 programmable controller
RU2743247C1 (en) * 2020-06-25 2021-02-16 Общество с ограниченной ответственностью "Электротехническая Компания-Приборы Автоматики" Method of programmable logic controller operation
US11500799B2 (en) * 2020-09-23 2022-11-15 EMC IP Holding Company LLC Managing access to a CPU on behalf of a block application and a non-block application
CN116700135B (en) * 2023-08-09 2023-10-20 长江三峡集团实业发展(北京)有限公司 Method and device for testing task scheduling mode of programmable logic controller

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4442504A (en) * 1981-03-09 1984-04-10 Allen-Bradley Company Modular programmable controller
DE3610433A1 (en) * 1985-03-28 1986-10-02 Allen-Bradley Co., Inc., Milwaukee, Wis. STORAGE PROGRAMMABLE CONTROL UNIT WITH FUNCTION PLAN INTERPRETER
EP0201081A2 (en) * 1985-05-10 1986-11-12 Hitachi, Ltd. Control apparatus
US4638452A (en) * 1984-02-27 1987-01-20 Allen-Bradley Company, Inc. Programmable controller with dynamically altered programmable real time interrupt interval
GB2180965A (en) * 1985-09-28 1987-04-08 Stc Plc Sequence controller

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3364472A (en) * 1964-03-06 1968-01-16 Westinghouse Electric Corp Computation unit
US4648064A (en) * 1976-01-02 1987-03-03 Morley Richard E Parallel process controller
US4128876A (en) * 1977-04-28 1978-12-05 International Business Machines Corporation Synchronous microcode generated interface for system of microcoded data processors
JPS5436941A (en) * 1977-08-29 1979-03-19 Ricoh Co Ltd Control system of copier by plural micro-processors
US4293924A (en) * 1979-05-30 1981-10-06 Allen-Bradley Company Programmable controller with high density intelligent I/O interface
US4302820A (en) * 1979-08-20 1981-11-24 Allen-Bradley Company Dual language programmable controller
US4338675A (en) * 1980-02-13 1982-07-06 Intel Corporation Numeric data processor
DE3144714C2 (en) * 1980-11-20 1986-02-13 Beloit Corp., Beloit, Wis. Automatic position control system for slitter
US4413319A (en) * 1981-03-09 1983-11-01 Allen-Bradley Company Programmable controller for executing block transfer with remote I/O interface racks
US4404651A (en) * 1981-03-09 1983-09-13 Allen-Bradley Company Programmable controller for using coded I/O data technique
JPS57155603A (en) * 1981-03-23 1982-09-25 Hino Motors Ltd Electronic controller of car
US4443865A (en) * 1981-10-26 1984-04-17 Allen-Bradley Co. Processor module for a programmable controller
US4521871A (en) * 1982-04-12 1985-06-04 Allen-Bradley Company Programmable controller with back-up capability
US4504927A (en) * 1982-09-08 1985-03-12 Allen-Bradley Company Programmable controller with expandable I/O interface circuitry
JPS59154564A (en) * 1983-02-24 1984-09-03 Hitachi Ltd Programmable controller
US4646231A (en) * 1983-07-21 1987-02-24 Burroughs Corporation Method of synchronizing the sequence by which a variety of randomly called unrelated activities are executed in a digital processor
US4771403A (en) * 1984-11-16 1988-09-13 Allen-Bradley Company, Inc. I/O module with multi-function integrated circuits and an isolation interface for multiplexing data between a main processor and I/O devices
US4691296A (en) * 1984-11-16 1987-09-01 Allen-Bradley Company, Inc. Method and apparatus for exchanging multiple data bytes with an I/O module in a single scan.
JPS6220006A (en) * 1985-07-19 1987-01-28 Toshiba Mach Co Ltd Remote i/o link system for programmable controller
JPS62121505A (en) * 1985-11-22 1987-06-02 Toshiba Mach Co Ltd Link system for programmable controller
US4858101A (en) * 1987-08-26 1989-08-15 Allen-Bradley Company, Inc. Programmable controller with parallel processors

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4442504A (en) * 1981-03-09 1984-04-10 Allen-Bradley Company Modular programmable controller
US4638452A (en) * 1984-02-27 1987-01-20 Allen-Bradley Company, Inc. Programmable controller with dynamically altered programmable real time interrupt interval
DE3610433A1 (en) * 1985-03-28 1986-10-02 Allen-Bradley Co., Inc., Milwaukee, Wis. STORAGE PROGRAMMABLE CONTROL UNIT WITH FUNCTION PLAN INTERPRETER
EP0201081A2 (en) * 1985-05-10 1986-11-12 Hitachi, Ltd. Control apparatus
GB2180965A (en) * 1985-09-28 1987-04-08 Stc Plc Sequence controller

Also Published As

Publication number Publication date
EP0311007B1 (en) 1994-03-09
EP0311007A2 (en) 1989-04-12
JPH0283601A (en) 1990-03-23
CA1310387C (en) 1992-11-17
US4937777A (en) 1990-06-26

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